I've had Painter 2020 installed for some time, but only just got around to using it. I used to use Painter a lot (I have been a beta tester for it way in the past), have had it since Painter 8 - anyway. However, for me there is a very annoying lag between changing brushes/tools. I've tested my other versions installed 2017-2019 and whilst they have a little pause, it's not the 2-3 second gap that version 2020 has. This is very distracting using the keyboard short cuts B and N to go between the brush and the eraser. It really disrupts the process.
This is incredibly annoying and makes me want to give Painter up for good. I've seen a few other posts about a switch lag (not version 2020 I note), and the only solution was to reinstall Windows 10. Which I am NOT going to do. My graphics card does not have AVX2, but as I'm only trying to use simple brushes I don't think this should have any affect. I've tried all the tweaks I can, but with no effect.
Any advice, or suggestions?
I don't know how much RAM you have, but setting up an external drive as a scratch disc in Preferences might help.